[TYPO3-english] Extbase backend module , hidden object

[Davide Navarro]

Hi I am working with the module backend Extbase. I created a form where you
can create objects and put them in HIDDEN. At the time of the update of
these objects, however, typo3 gives me error. This also happens if I try to
create a link 1: not: n with other objects. How do I solve this problem, ie
in the backend does not see them as hidden?